Vacuum Pumps for Rotary Evaporators

Rotary evaporators are typically used to remove solvents following chemical reactions. Combined with gentle heat from the evaporator bath, controlled vacuum is used to bring solvents to boiling or near-boiling. Efficient solvent distillation requires vacuum balanced to achieve sufficient pressure reduction and molecular flow without losing sample or overrunning the condensing capabilities of your rotovap. When selecting a vacuum pump for rotary evaporation:

1. Select a chemical resistant dry diaphragm vacuum pump for routine evaporations.
2. Buy a vacuum pump capable of quickly evaporating your least volatile solvent. Fast stripping of DMF requires a 2 torr diaphragm pump. 
3. The ability to adjust vacuum level and react quickly to bumping / foaming conditions are keys to preserving your sample and using your time efficiently.
4. Automated diaphragm vacuum systems can help you save both sample and time.

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  1. Welch DryFast Collegiate Diaphragm Pump

    Starting at from $1,525.00 Sale $1,372.50

  2. Welch DryFast Diaphragm Pump

    Starting at from $2,140.00 Sale $1,926.00

  3. Welch DryFast Ultra Diaphragm Pump

    Starting at from $3,055.00 Sale $2,749.50

  4. Welch DuoSeal 1400

    Starting at from $2,235.00 Sale $2,011.50

  5. Welch DuoSeal 1402

    Starting at from $3,230.00 Sale $2,907.00

  6. Welch GEM Direct Drive Gear Pump - Rotavap

    Starting at from $2,795.00 Sale $2,515.50

  7. Welch High Capacity Diaphragm Pump

    Starting at from $5,020.00 Sale $4,518.00

  8. Welch High Capacity Diaphragm Pump

    Starting at from $3,995.00 Sale $3,595.50

  9. Welch Self-Cleaning Vacuum System

    Starting at from $3,615.00 Sale $3,253.50

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